#!/usr/bin/env bash
# group: quick
#
# Test write zeros unmap.
#
# Copyright (C) Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

seq="$(basename $0)"
echo "QA output created by $seq"

trap _cleanup_test_img exit

# get standard environment, filters and checks
cd ..
. ./common.rc
. ./common.filter

_supported_fmt raw
_supported_proto file
_supported_os Linux

create_test_image() {
    _make_test_img -f $IMGFMT 1m
}

filter_command() {
    _filter_testdir | _filter_qemu_io | _filter_qemu | _filter_hmp
}

print_disk_usage() {
    du -sh $TEST_IMG | _filter_testdir
}

echo
echo "=== defaults - write zeros ==="
echo

create_test_image
echo -e 'qemu-io none0 "write -z 0 1m"\nquit' \
    | $QEMU -monitor stdio -drive if=none,file=$TEST_IMG,format=$IMGFMT \
    | filter_command
print_disk_usage

echo
echo "=== defaults - write zeros unmap ==="
echo

create_test_image
echo -e 'qemu-io none0 "write -zu 0 1m"\nquit' \
    | $QEMU -monitor stdio -drive if=none,file=$TEST_IMG,format=$IMGFMT \
    | filter_command
print_disk_usage


echo
echo "=== defaults - write actual zeros ==="
echo

create_test_image
echo -e 'qemu-io none0 "write -P 0 0 1m"\nquit' \
    | $QEMU -monitor stdio -drive if=none,file=$TEST_IMG,format=$IMGFMT \
    | filter_command
print_disk_usage

echo
echo "=== discard=off - write zeroes unmap ==="
echo

create_test_image
echo -e 'qemu-io none0 "write -zu 0 1m"\nquit' \
    | $QEMU -monitor stdio -drive if=none,file=$TEST_IMG,format=$IMGFMT,discard=off \
    | filter_command
print_disk_usage

echo
echo "=== detect-zeroes=on - write actual zeros ==="
echo

create_test_image
echo -e 'qemu-io none0 "write -P 0 0 1m"\nquit' \
    | $QEMU -monitor stdio -drive if=none,file=$TEST_IMG,format=$IMGFMT,detect-zeroes=on \
    | filter_command
print_disk_usage

echo
echo "=== detect-zeroes=on,discard=on - write actual zeros ==="
echo

create_test_image
echo -e 'qemu-io none0 "write -P 0 0 1m"\nquit' \
    | $QEMU -monitor stdio -drive if=none,file=$TEST_IMG,format=$IMGFMT,detect-zeroes=on,discard=on \
    | filter_command
print_disk_usage

echo
echo "=== discard=on - write zeroes ==="
echo

create_test_image
echo -e 'qemu-io none0 "write -z 0 1m"\nquit' \
    | $QEMU -monitor stdio -drive if=none,file=$TEST_IMG,format=$IMGFMT,discard=on \
    | filter_command
print_disk_usage

echo
echo "=== discard=on - write zeroes unmap ==="
echo

create_test_image
echo -e 'qemu-io none0 "write -zu 0 1m"\nquit' \
    | $QEMU -monitor stdio -drive if=none,file=$TEST_IMG,format=$IMGFMT,discard=on \
    | filter_command
print_disk_usage
